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From: Ivan Voras <ivoras@freebsd.org>
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Subject: Re: Is there an equiv of Linux KVM for FreeBSD?
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Alfred Perlstein wrote:

> Specifically anything that allows QoS of percent of the host
> machine's CPU to be allocated?

This is a "hard problem" in any case - emulation or no emulation.

But with todays multicore + hyperthreading CPUs you can do so on a 
coarse "1 CPU core" granularity. I.e. a Nehalem quad-core CPU will 
present itself as 8 logical CPUs and you can bind processes to these 
logical CPUs to achive 1/8 granularity (possibly with jails, or any 
other virtualization).